Troublemaker content to leave elemental force (5)
I believe the answer is:
impel
'force' is the definition.
('impel' can be a synonym of 'force')
'troublemaker content to leave elemental' is the wordplay.
'troublemaker' becomes 'imp' (I've seen this before).
'content to leave' says to hollow out the word (remove centre letters) (the contents of the word are removed).
'elemental' with its centre taken out is 'el'.
'imp'+'el'='IMPEL'
(Other definitions for impel that I've seen before include "Egg" , "Force into motion" , "Force to act" , "Hold together" , "Make" .)